Image forming apparatus with cleaning member

Abstract

When a switch displayed on an operation panel is operated, a control portion starts aging control in which image formation is stopped and yellow toner is applied onto an intermediary transfer belt and a secondary transfer roller. A toner band is formed, on full circumference of the intermediary transfer belt at a position in which toner images for control are formed, with a width correspondingly to widths of the toner images for control.

1. An image forming apparatus, comprising:
 an image carrying member; 
 toner image forming means, for forming a toner image on said image carrying member, capable of forming an adjusting toner image; 
 adjusting means for adjusting a toner image forming condition by detecting the adjusting toner image; 
 a transfer member, contactable to said image carrying member, for forming a transfer portion for transferring the toner image from said image carrying member onto a recording material; 
 a transfer power source for applying a voltage of an opposite polarity to a normal charge polarity of toner; 
 a brush cleaning member, contactable to said transfer member, for electrostatically removing toner on said transfer member; and 
 an execution portion for executing a cleaning mode in which a cleaning toner image is formed in a length equal to or longer than a circumference of said transfer member and in an area including an area in which the adjusting toner image is formed with respect to a direction perpendicular to a movement direction of said image carrying member and then the cleaning toner image is transferred onto said transfer member by said transfer power source and then said brush cleaning member electrostatically removes the toner transferred on said transfer member. 
 
     
     
       2. An apparatus according to  claim 1 , wherein the cleaning toner image has a width smaller than a maximum image forming area width with respect to the direction perpendicular to the movement direction of said image carrying member. 
     
     
       3. An apparatus according to  claim 1 , wherein the cleaning toner image is continuously formed in a length equal to an integral multiple of the circumference of said transfer member. 
     
     
       4. An apparatus according to  claim 1 , wherein the cleaning toner image is intermittently formed at different positions for a plurality of rotations of said image carrying member in a rotational direction of said image carrying member. 
     
     
       5. An apparatus according to  claim 1 , further comprising a plurality of developing devices different in color of toner used,
 wherein the cleaning toner image is formed by using the developing device for toner having a smallest contrast with respect to the recording material. 
 
     
     
       6. An apparatus according to  claim 1 , wherein a length of the cleaning toner image formed in the cleaning mode is not less than a circumference of said image carrying member.